Chain A ( I157 F158 Y223 K227 I230 K231 E233 N234 L235 H236 I237 V238 N239 D240 I241 E242 N243 K244 C245 P248 F411 Q413 I414 E415 L416 K417 I418 A419 A420 E421 I422 T423 L429 K430 Y432 N433 L438 F512 S525 T526 L527 S528 N529 R530 K531 P546 V547 T550 C551 D553 I554 L555 K556 L557 A558 L559 V560 D561 L562 Y563 D564 N565 L566 I573 I581 I583 I596 L597 V598 Q599 S600 M601 E602 N603 S604 A605 S606 Y607 F608 L609 K610 K611 V612 K613 C614 V616 ),  Chain B ( I134 I136 I157 F158 D159 I162 A163 L166 L167 K169 K227 I230 E233 N234 L235 H236 I237 V238 N239 D240 I241 E242 N243 K244 C245 I246 L247 P248 I249 Q370 R377 F378 A409 F411 Q413 I414 E415 L416 K417 I418 A419 A420 E421 I422 T423 N424 M428 L429 K430 Y432 N433 F467 I470 Y471 Q523 Y524 S525 T526 L527 S528 N529 R530 K531 V532 A542 L543 N544 Y545 P546 V547 Q548 G549 T550 C551 A552 D553 I554 L555 K556 L557 A558 L559 V560 D561 L562 Y563 N565 I573 I574 C576 H578 D579 E580 I581 I582 I583 K595 I596 L597 V598 Q599 S600 M601 E602 N603 S604 A605 S606 Y607 F608 L609 K610 K611 V612 K613 C614 E615 V616 )